地球是一颗行星。
The earth is a planet and it goes around the sun.
地球是颗行星,它绕着太阳转。
The earth is a planet and it goes around the sun. Seven other planets also go around the sun.
地球是颗行星,它绕着太阳转。其他七颗行星也绕着太阳转。
The largest terrestrial planet, Earth has a diameter only one quarter as great as the diameter of the smallest Jovian planet, Neptune, and its mass is only one seventeenth as great.
最大的类地行星地球的直径仅仅是最小的类木行星海王星的四分之一,而且地球的质量仅仅是其质量的十七分之一。
After many years of scrutinizing, astronomers have found a planet that is similar to the Earth.
经过多年的仔细研究,天文学家发现了一颗与地球相似的行星。
The planet Venus takes 243 earth-days to turn once on its axis, so incoming heat from the sun is added and distributed at a more leisurely, observable pace.
金星自转一周需要243个地球日,因此来自太阳的热量以更悠闲、更容易观察到的速度被吸收和分配。
In many—even most-space—themed films, whenever Earth faces a disaster,the solution is always running away from the planet in spaceships.
在很多甚至是大多数以太空为主题的电影中,每当地球面临灾难时,解决办法总是乘坐宇宙飞船逃离这个地球。
And while the planet is likely too chilly to make a good home, it gives us hope that smaller, Earth-sized planets may be abundant.
因此,天文学家认为MOA-192 b 不会像地球这样气候宜人,而是像海王星一样,是一个冰冷的气态行星。虽然要在这颗行星上安家太冷了,但是它给予我们希望,或许地球这样尺寸的较小行星还是挺多的。
If a rocky planet is big enough - say, 10 times the mass of Earth - it can vacuum up so much hydrogen that its atmosphere ends up constituting most of the planet.
如果一个由岩石组成的行星足够的大——比方说,质量是地球的10倍——它可以吸收如此多的氢,以至于他的大气层最终会形成大部分的行星。
Perhaps the strange human desire to fly away from the planet, to "slip the surly bonds of earth," is a necessary impulse for discovering who we are.
人类有一个奇怪的想法,那就是从地球上远走高飞以挣脱这个乖戾的星球。或许这个冲动对于发现我们究竟是谁是必要的。
The red planet is the most Earth-like of solar system planets, with a comparatively similar size and temperature range as our own planet.
这个红色的星球是太阳系中和地球最类似的行星,它和我们居住的星球有着相似的大小和温度环境。
The Earth isn't completely spherical - land at the North Pole is a number of kilometres nearer to the core of the planet than land at the Equator.
事实上,气球并非是一个完美的球体,北极地区要比赤道地区更加接近地心,两地之间的这一差距大概是在数公里。
In tribute to those achievements and to the unique view of Earth that the shuttle has provided, we offer a new photo feature: Every Flight is a Mission to Planet Earth.
在赞扬航天飞机带来的成就和观察地球的独特视角时,我们提供了一个新的照片功能:每次飞行,都是地球的使命。
During summer on the top half of Earth, our planet is actually farther from the sun than during winter, a fact owing to our non-circular orbit around the sun.
在地球的上半部分为夏季的时候,实际上这时的地球离开太阳的距离比在冬季还要远。所以会这样,是由于我们围绕太阳运行的轨道,并不是圆的。
This is the first study in the world to use the reflection of the Earth to measure the effect of continents and oceans on the apparent brightness of a planet.
这是世界上首次利用地照来研究陆地和海洋对行星表面亮度的影响。在其他研究中,已经使用色谱和红外传感技术来确认植物以及进行气候监测。
Many of us think of scientists experimenting in a lab during the hypothesis-testing phase, but for scientists studying how the Earth works, their lab is the planet.
我们大部分人都认为科学家呆在实验室里做做实验就完成了假设检验,但是对于研究地球运行的科学家来说,地球才是他们的实验室。
This is the first image ever taken of Earth from the surface of a planet beyond the Moon.
这是除月球之外,第一个从其它星球的陆地上拍摄地球的照片。
Light falls off exponentially with distance, so a planet that is, say, twice as close to the sun as Earth is would get much more than twice the solar energy.
随着离开太阳的距离增加,阳光强度呈指数级下降,因此一颗距离太阳比地球近一倍的行星所接受到的阳光远远不止地球所接受到强度的一倍。
Earth Day is a time to consider the actions you can take to protect the planet. But you shouldn't forget just what it is you're protecting it from.
世界日是你应该考虑怎么样保护我们这个地球的时候,但是不要忘记我们到底保护地球远离什么样威胁?
Another new discovery concerns Mercury's magnetic field. The planet, along with Earth, is alone among the terrestrial planets in having a global magnetic field.
另一个新发现是关于水星磁场的:水星和地球是所有的类地行星中有球星磁场的行星。
One need but take a look around and know that the plight of humankind on the planet Earth is far from being perfect.
你有必要仅仅看看你的周围,就知道地球上人类所处的境地远称不上完美。
The White Dragon Society and its Allies are appealing for calm and a negotiated solution before the planet earth is destroyed.
白龙会及其同盟恳请双方冷静,并在地球被毁灭前协商出一个解决方案。
Earth orbit is and will remain a valuable place, as the swarms of satellites that circle the planet attest.
地球轨道是并一直是难得的地点,成群的环绕卫星就是例证。
The navy was planning an expedition on the South Pacific Ocean with the purpose of watching a very unusual event, that is the planet Venus passing between the earth and the sun in 1769.
海军计划到南太平洋进行考察,目的是观察一次不平凡的事件,即金星将于1769年在地球与太阳之间穿过。
It is a normal element cycled around in the earth and my science, which is looking back in time, is saying we have had a planet that has been a green, warm wet planet 80 per cent of the time.
这是地球上一个正常的元素循环,我的科学沿时间回溯,表明我们的地球80%的时间曾是一个绿色、温暖、潮湿的行星。
Astronomers estimate the newly-found planet is about 45 times more massive than Earth, and has a year lasting 260 Earth days.
宇航员估计最近发现的这颗行星质量比地球重45倍,一年有260天。
Astronomers estimate the newly-found planet is about 45 times more massive than Earth, and has a year lasting 260 Earth days.
宇航员估计最近发现的这颗行星质量比地球重45倍,一年有260天。
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